Manual device for controlling brake and accelerator of a vehicle

ABSTRACT

A manual device for controlling brake and accelerator of a vehicle, a device having a body coupled with the vehicle and remaining substantially standstill while the device is used. The device includes a first lever provided with an upper handgrip projecting from inside the body and movable independently with respect to the same, a second lever and a third lever and a frame the first lever being pivoted on the frame in a substantially central position. When the user exerts an action on a handgrip it can be displaced forward or backward, the second lever being pivoted above on a frame in correspondence of one of its ends the upper part of the first lever shaped not to interfere with the second lever as an upper kinematic torque, the third lever being pivoted at the bottom of the frame in correspondence of one of its ends lower end of the first lever being so shaped to interfere with the lever, as an upper kinematic torque, free end of the second lever being coupled with brake and free end of the third lever being coupled with accelerator.

The present invention concerns a manual device for controlling brake and accelerator of a vehicle.

More specifically, the invention relates to a manual device of the above kind comprised of three lever pivoted in different points of a frame and interacting so as to adjust braking and acceleration of a vehicle by movement of a single knob.

As it is well known, in the field concerning devices for helping driving vehicles for disabled persons, different devices exist for manually controlling acceleration and braking action. They are comprised of a plurality of levers, connected with pedal operation levers, occupying space within the passenger compartment. In order to reduce dimensions of the device, levers are usually provided in a lowered position, and thus levers and connection rods when moving rubbing against driver legs or car elements, such as the seat of the central passage. Further, said rods, if the driver acts on pedals by lower limbs, transmit the movement to the manual control levers; in order to obviate to said drawback, said rods must be telescopic rods, thus being more difficult to be realised and reducing strength of the whole device.

Thus, the needing exists of realising a manual control device which is small, and permits, by a single element, actuating two controls, and can be installed so as not to hinder driver movements, or rubbing against cart parts, and, finally, permits using rigid rods ensuring a best solidity of the structure.

Object of the present invention is therefore that of realising a manual control device having small dimensions, permitting by a single element actuating two controls, can be installed so as not to hinder driver movements, or rubbing against cart parts, and, finally, permits using rigid rods ensuring a best solidity of the structure.

Main innovative feature is that accelerator and brake levers are placed within a housing permitting ensuring operation preventing, in case of leg contraction, (not wished) interference with driver when controlling brake and accelerator lever. At the same time, housing ac is both as anchoring and as lever, and all other accessories, support, thus creating set self-supporting and limited dimensions within the vehicle.

It is therefore specific object of the present invention a manual device for controlling brake and accelerator of a vehicle, said device comprising a body, coupled with the vehicle and remaining substantially standstill while the device is used, and within which there are provided first lever, provided with an upper handgrip, projecting from inside said body, and movable independently with respect to the same, a second lever and a third lever, and a frame, said first lever being pivoted on the frame in a substantially central position, so that, if user exerts an action on said handgrip, it can be displaced forward or backward, said second lever being pivoted above on said frame, in correspondence of one of its ends, the upper part of the first lever being so shaped not to interfere with said second lever, as an upper kinematic torque, said third lever being pivoted at the bottom of said frame, in correspondence of one of its ends, lower end of said first lever being so shaped to interfere with said lever, as an upper kinematic torque, free end of the second lever being coupled with brake operation means, and free end of the third lever being coupled with accelerator operation means.

Preferably, according to the invention, said second lever and said third lever are provided with return elastic means, particularly a spring, aiming to bring then in a rest or neutral position.

Still according to the invention, said device is provided with a bracket for fixing to the vehicle, particularly a bracket that can be inserted within holes realised into the seat frame.

Furthermore, according to the invention, said frame provides two specular elements, placed aside the lever assembly.

Preferably, according to the invention, acceleration action is made pulling backward said first lever, while braking action is made pushing said first lever forward.

Advantageously, said handgrip can be provided with other controls, such as, for example, a brake blocking button, horn, of light operating controls.

Furthermore, according to the invention, said device can be horizontally provided under the steering wheel.

Present invention will be now described for illustrative, but not limitative purposes, with reference to the figures of the enclosed drawings, according to one preferred embodiment. Particularly:

FIG. 1 is an axonometric view of manual device according to the invention;

FIG. 2 schematically shows, partially in exploded view, manual device according to the invention and its system for anchoring to the vehicle elements;

FIG. 3 schematically shows device according to the invention, from which outer housing has been removed, during operative acceleration step; and

FIG. 4 schematically shows device according to the invention, from which outer housing has been removed, during operative braking step.

Observing the enclosed drawings, it is observed manual device 100 according to the invention, comprising a body A (comprised of two hemi-shells), within which there are provided a first lever 10, provided with an upper handgrip 2, a second lever 20, and a third lever 30, and a frame 1, that in the embodiment shown provides two specular elements, but that can be realised in a different way.

Said first lever 10 is pivoted according to a substantially central horizontal position 11 on said frame 1, so that, in case user exerts an action on said handgrip 2, can be displaced forward or backward.

Said second lever 20 is pivoted above on said frame 1, in correspondence of one of its ends, at point indicated by reference number 22. Upper part 13 of lever 10 is so shaped so as to interfere with said second lever 20, like an upper kinematic torque. Said third lever 30 is pivoted at the bottom of said frame 1, in correspondence of one of its ends, at point indicated by reference number 32. Lower end 12 of said first lever 10 is so shaped to interfere with said lever, as an upper kinematic torque.

Free end of second lever 20 is coupled with a rod 6 for operation of brake, while free end of third lever 30 is coupled with a rod 5 for operation of accelerator. Acceleration and braking systems will be no further described, since they are not specific part of the invention.

Device 100 according to the invention is further provided with a bracket 3 for fixing to the vehicle. Particularly, in the solutions shown, fixing occurs on a bracket 7 that can be inserted through holes 4 realised on seat 8 frame, so as to be able to adjust position of device 100 according to the user needing.

Acting on handgrip 2, by a pushing action, backward in the present embodiment, i.e. pulling the lever 10 toward the user, lower end 12 of lever 10 acts on lever 30, making it rotating with an excursion corresponding to the full accelerator stroke. Obviously, user can tune action, deciding when accelerating or not. A return spring 33 is provided on pivoting point 32 of lever 30 aiming bringing lever 30 back in a rest position as soon as pushing action is released from the same lever 10, thus preventing risk that vehicle is involuntarily accelerated.

Acting instead on handgrip 2, pushing it forward, upper end of lever 10 acts on lever 20, making it rotating about point 22, of a distance corresponding to the full brake stroke. Obviously, in this case too the user can adjust the action, deciding when applying the braking action. A return spring 23 is provided on pivoting point 22 of lever 20, aiming to bring the lever 20 back in the rest position as soon as pushing exerted on the same lever 10 is released.

As it can be noted, by device 100 according to the invention, it is provided to the user a system which is very simple and usable by a single hand to accelerate and brake. Acceleration and braking direction can be obviously reversed. Furthermore, device according to the invention is so realised to ensure elimination of every acceleration force while braking, since to brake it is necessary interrupting the acceleration action.

Advantageously, as already said, said handgrip 2 can be provided with different controls, such as, for example, a brake blocking button, horn, or light operating controls.

Preferred embodiments of the invention have been described in the above, but it is to be understood that modifications and variations can be introduced by those skilled in the art without departing from the relevant scope as defined in the enclosed claims. 

1. Manual device for controlling brake and accelerator of a vehicle, said device being characterised in that it comprises a body, coupled with the vehicle and remaining substantially standstill while the device is used, and within which there are provided first lever, provided with an upper handgrip, projecting from inside said body, and movable independently with respect to the same, a second lever and a third lever, and a frame, said first lever being pivoted on the frame in a substantially central position, so that, if user exerts an action on said handgrip, it can be displaced forward or backward, said second lever being pivoted above on said frame, in correspondence of one of its ends, the upper part of the first lever being so shaped not to interfere with said second lever, as an upper kinematic torque, said third lever being pivoted at the bottom of said frame, in correspondence of one of its ends, lower end of said first lever being so shaped to interfere with said lever, as an upper kinematic torque, free end of the second lever being coupled with brake operation means, and free end of the third lever being coupled with accelerator operation means.
 2. Device according to claim 1, characterised in that said second lever and said third lever are provided with return elastic means, aiming to bring then in a rest or neutral position.
 3. Device according to claim 2, characterised in that said elastic means are comprised of a spring.
 4. Device according to claim 1, characterised in that it is provided with a bracket for fixing to the vehicle, particularly a bracket that can be inserted within holes realised into the seat frame.
 5. Device according to claim 1, characterised in that said frame provides two specular elements, placed aside the lever assembly.
 6. Device according to claim 1, characterised in that acceleration action is made pulling backward said first lever, while braking action is made pushing said first lever forward.
 7. Device according to claim 1, characterised in that said handgrip is provided with other controls, such as, for example, a brake blocking button, horn, of light operating controls.
 8. Device according to claim 1, characterised in that said device is horizontally provided under the steering wheel. 